Primary Purpose
| primary_purpose | Study_Count |
|---|---|
| Treatment | 1151 |
| Diagnostic | 235 |
| Prevention | 210 |
| Basic Science | 71 |
| Supportive Care | 51 |
| Health Services Research | 47 |
| Other | 42 |
| NA | 38 |
| Screening | 15 |
| Device Feasibility | 1 |
| Educational/Counseling/Training | 1 |
Craig Mayer, Nick WIlliams, Vojtech Huser
Lister Hill National Center for Biomedical Communications, National Library of Medicine, NIH, Bethesda, MD
See the full regCTG repository at https://github.com/lhncbc/CRI/tree/master/regCTG
To return to the list of conditions and view other reports go to https://lhncbc.github.io/CRI/regCTG/regCTG-condition_report_links.html
| Type | Study_count |
|---|---|
| Total_Studies | 2791 |
| interventional | 1862 |
| Observational | 777 |
| Registry | 152 |
```
| intervention_type | Study_Count |
|---|---|
| Device | 443 |
| Drug | 431 |
| Procedure | 203 |
| Other | 181 |
| Drug|placebo | 171 |
| Behavioral | 146 |
| Diagnostic Test | 28 |
| Device|Drug | 24 |
| Device|Procedure | 22 |
| Dietary Supplement|placebo | 19 |
| Dietary Supplement | 18 |
| Biological | 15 |
| Device|Other | 14 |
| Drug|Procedure | 14 |
| Drug|Other | 13 |
| Behavioral|Other | 12 |
| Radiation | 12 |
| Other|Procedure | 11 |
| Biological|placebo | 10 |
| Behavioral|Drug | 6 |
| Drug|Other|placebo | 6 |
| Behavioral|Procedure | 4 |
| Combination Product | 4 |
| Genetic | 4 |
| Other|placebo | 3 |
| Behavioral|Device | 2 |
| Behavioral|Drug|Other | 2 |
| Behavioral|Drug|Procedure | 2 |
| Biological|Other | 2 |
| Device|Drug|placebo | 2 |
| Device|Drug|Procedure | 2 |
| Device|placebo | 2 |
| Diagnostic Test|Other | 2 |
| Dietary Supplement|Drug | 2 |
| Drug|placebo|Procedure | 2 |
| placebo|Procedure | 2 |
| Procedure|Radiation | 2 |
| Behavioral|Biological|Drug | 1 |
| Behavioral|Dietary Supplement|Other | 1 |
| Behavioral|Drug|placebo | 1 |
| Behavioral|Genetic | 1 |
| Behavioral|Genetic|Other | 1 |
| Biological|Device|Other | 1 |
| Biological|Device|placebo | 1 |
| Biological|Other|placebo | 1 |
| Combination Product|Device | 1 |
| Combination Product|Drug|placebo | 1 |
| Device|Other|Procedure | 1 |
| Diagnostic Test|Genetic | 1 |
| Diagnostic Test|Procedure | 1 |
| Dietary Supplement|Drug|Other | 1 |
| Dietary Supplement|Drug|Other|Procedure | 1 |
| Dietary Supplement|Drug|placebo | 1 |
| Dietary Supplement|Other | 1 |
| Drug|Genetic | 1 |
| Drug|Genetic|Other | 1 |
| Drug|placebo|Radiation | 1 |
| Drug|Procedure|Radiation | 1 |
| Genetic|placebo | 1 |
| Other|Radiation | 1 |
| placebo | 1 |
| Country | Study_Count |
|---|---|
| United States | 436 |
| NA | 133 |
| China | 124 |
| Canada | 98 |
| Korea, Republic of | 92 |
| Germany | 89 |
| United Kingdom | 78 |
| Denmark | 61 |
| Brazil | 46 |
| France | 46 |
| Japan | 46 |
| Italy | 44 |
| Switzerland | 42 |
| Netherlands | 33 |
| Norway | 26 |
| Sweden | 24 |
| Greece | 21 |
| Poland | 21 |
| Russian Federation | 19 |
| Spain | 17 |
| Belgium | 16 |
| Finland | 13 |
| United States|Canada | 13 |
| India | 12 |
| Israel | 10 |
| Taiwan | 9 |
| Austria | 8 |
| Iran, Islamic Republic of | 8 |
| Australia | 5 |
| Egypt | 5 |
| Turkey | 5 |
| Croatia | 4 |
| Czech Republic | 4 |
| Hong Kong | 4 |
| Slovenia | 4 |
| Argentina | 3 |
| Belgium|Netherlands | 3 |
| Colombia | 3 |
| Indonesia | 3 |
| Lebanon | 3 |
| Pakistan | 3 |
| Portugal | 3 |
| Colombia|Italy | 2 |
| Denmark|Sweden | 2 |
| Ecuador | 2 |
| France|Germany | 2 |
| Hungary | 2 |
| Ireland | 2 |
| Italy|Switzerland | 2 |
| Jordan | 2 |
| Mexico | 2 |
| New Zealand | 2 |
| Romania | 2 |
| Thailand | 2 |
| United States|Australia | 2 |
| United States|Canada|Denmark | 2 |
| United States|Ireland|Netherlands|Sweden | 2 |
| United States|Japan | 2 |
| United States|New Zealand|Singapore | 2 |
| United States|United Kingdom | 2 |
| Argentina|Australia|Austria|Bahrain|Bangladesh|Belgium|Bulgaria|Czechia|Denmark|Estonia|France|Germany|Hungary|India|Israel|Italy|Japan|Korea, Republic of|Netherlands|North Macedonia|Poland|Saudi Arabia|Serbia|Singapore|Slovenia|Spain|Sweden|Switzerland|United Kingdom|Vietnam | 1 |
| Argentina|Australia|Austria|Belgium|Brazil|China|Denmark|France|Germany|Greece|Hungary|India|Israel|Italy|Latvia|Malaysia|Netherlands|Norway|Poland|Portugal|Russian Federation|South Africa|Spain|Switzerland|United Kingdom|Venezuela | 1 |
| Argentina|Austria|Belgium|Brazil|Denmark|France|Germany|Hungary|Italy|Latvia|Netherlands|Norway|Poland|Spain|Switzerland | 1 |
| Argentina|Belgium|Brazil|Hungary|Netherlands|Poland|Russian Federation|Spain | 1 |
| Australia|Austria|Belgium|Bulgaria|France|Hong Kong|Ireland|Italy|Korea, Republic of|Latvia|Lithuania|Malaysia|Netherlands|New Zealand|Norway|Poland|Singapore|Slovakia|Spain|Sweden|Switzerland|Thailand|United Kingdom | 1 |
| Australia|Belgium|Brazil|Denmark|France|Germany|Netherlands|Poland | 1 |
| Australia|Belgium|Brazil|Germany|Netherlands|New Zealand|Poland|Switzerland | 1 |
| Australia|Belgium|Denmark|France|Germany|Netherlands|New Zealand|Portugal|Switzerland|United Kingdom | 1 |
| Australia|Belgium|Denmark|France|Netherlands|New Zealand|Poland|Switzerland | 1 |
| Australia|Belgium|Denmark|France|New Zealand|Poland|Spain|Sweden|United Kingdom | 1 |
| Australia|Belgium|New Zealand | 1 |
| Australia|Brazil|Singapore | 1 |
| Australia|France|Netherlands|Sweden|United Kingdom | 1 |
| Australia|Latvia|New Zealand | 1 |
| Australia|Malaysia|New Zealand|Singapore | 1 |
| Australia|New Zealand|Singapore | 1 |
| Austria|Belgium|China|Germany|Hong Kong|Italy|Netherlands|Portugal|Singapore|Spain|Switzerland|Taiwan|United Kingdom | 1 |
| Austria|Belgium|Denmark|France|Germany|India|Italy|Netherlands|New Zealand|Poland|South Africa|Spain|Switzerland | 1 |
| Austria|Belgium|France|Germany|Netherlands|United Kingdom | 1 |
| Austria|Belgium|Germany|Netherlands|Poland|Spain|Sweden|Switzerland | 1 |
| Austria|Belgium|United States|Argentina|Australia|Brazil|Canada|China|Czechia|Denmark|Finland|France|Germany|Grenada|Hungary|Ireland|Israel|Italy|Korea, Republic of|Netherlands|New Zealand|Poland|Puerto Rico|Slovakia|South Africa|Spain|Sweden|Switzerland|United Kingdom | 1 |
| Austria|Czechia|Denmark|Germany|Hungary|Ireland|Italy|Latvia|Lithuania|Poland|Portugal|Romania|Serbia|Spain|United Kingdom | 1 |
| Austria|Denmark|France|Germany|Greece|Netherlands|Portugal|Spain | 1 |
| Austria|Denmark|Germany|Hungary|Switzerland | 1 |
| Austria|Denmark|Germany|Switzerland | 1 |
| Austria|France|Germany|Israel|Italy|Malaysia|Netherlands|Poland|Spain|Thailand|United Kingdom | 1 |
| Austria|France|Germany|Italy|Netherlands|Switzerland|United Kingdom | 1 |
| Austria|Germany|Israel|United Kingdom | 1 |
| Austria|Germany|Switzerland | 1 |
| Austria|Hungary | 1 |
| Austria|United States|Argentina|Australia|Belgium|Brazil|Bulgaria|Canada|Chile|China|Croatia|Czech Republic|Estonia|Finland|France|Germany|Greece|India|Ireland|Israel|Italy|Korea, Republic of|Latvia|Lithuania|Malaysia|Mexico|Netherlands|Poland|Romania|Russian Federation|Singapore|Slovakia|South Africa|Spain|Sweden|Switzerland|Turkey|United Kingdom | 1 |
| Belgium|Brazil | 1 |
| Belgium|Brazil|Czechia|Latvia|Macedonia, The Former Yugoslav Republic of|Netherlands|Poland|Spain|United Kingdom | 1 |
| Belgium|Brazil|Denmark|Germany|Netherlands|Singapore|Spain|Switzerland | 1 |
| Belgium|Brazil|Denmark|Germany|New Zealand|Poland | 1 |
| Belgium|Czech Republic|France|Germany|Netherlands|Spain|Sweden|United Kingdom | 1 |
| Belgium|Czechia|France|Germany|Netherlands|Sweden|Switzerland | 1 |
| Belgium|Denmark|Estonia|Finland|Germany|Ireland|Italy|Latvia|Netherlands|Norway|Poland|Sweden|United Kingdom | 1 |
| Belgium|Denmark|France|Germany|Italy|Netherlands|Spain|Sweden|United Kingdom | 1 |
| Belgium|Finland|Netherlands|Switzerland|United Kingdom | 1 |
| Belgium|France|Germany|Netherlands|Poland|Switzerland|United Kingdom | 1 |
| Belgium|France|Luxembourg|Netherlands | 1 |
| Belgium|France|Netherlands|New Zealand|Sweden|United Kingdom | 1 |
| Belgium|Germany | 1 |
| Belgium|Germany|Israel|Sweden | 1 |
| Belgium|Germany|Netherlands|Switzerland | 1 |
| Belgium|Germany|Netherlands|United Kingdom | 1 |
| Belgium|Italy | 1 |
| Belgium|Italy|Netherlands | 1 |
| Belgium|New Zealand | 1 |
| Belgium|United Kingdom | 1 |
| Brazil|Germany | 1 |
| Brazil|Greece|Poland|Spain|United States|Argentina|Australia|Bulgaria|Canada|China|Czechia|Denmark|Estonia|France|Germany|Hungary|Japan|Korea, Republic of|Latvia|Lithuania|Malaysia|Mexico|Netherlands|Portugal|Romania|Russian Federation|Slovakia|South Africa|Sweden|Turkey|Ukraine|United Kingdom | 1 |
| Brazil|Indonesia|Macedonia, The Former Yugoslav Republic of|Malaysia | 1 |
| Cameroon|Canada|Italy|Spain|United Kingdom| | 1 |
| Canada|Czech Republic|France|Poland|Romania|Russian Federation|Slovakia | 1 |
| Canada|New Zealand | 1 |
| Chile | 1 |
| China|Hong Kong | 1 |
| China|Korea, Republic of | 1 |
| Czechia | 1 |
| Czechia|Denmark|Germany|Switzerland | 1 |
| Czechia|Germany|Hungary|Netherlands|Norway|Poland|Singapore|Sweden | 1 |
| Czechia|United States|Australia|France|Germany|Hungary|New Zealand|Poland|Romania|United Kingdom | 1 |
| Denmark|Estonia|Finland|France|Norway|Spain|Sweden|United Kingdom | 1 |
| Denmark|Finland|Latvia|Sweden | 1 |
| Denmark|Finland|Sweden | 1 |
| Denmark|France|Germany|Italy|Japan|Lithuania|Netherlands|Poland|Spain|Sweden|Switzerland | 1 |
| Denmark|France|Germany|Italy|Latvia|Serbia|Spain|United Kingdom | 1 |
| Denmark|France|Germany|Netherlands | 1 |
| Denmark|Germany|Netherlands | 1 |
| Denmark|Italy|Japan|Netherlands|Spain|United Kingdom | 1 |
| Denmark|Latvia | 1 |
| Denmark|Netherlands|Spain | 1 |
| Denmark|Netherlands|Spain|Sweden | 1 |
| Denmark|Poland | 1 |
| Denmark|Spain | 1 |
| Finland|France|Germany|Italy|Netherlands|Poland|Spain|Switzerland|United Kingdom | 1 |
| France|Germany|Italy|Netherlands | 1 |
| France|Germany|Italy|Serbia|Spain | 1 |
| France|Germany|Italy|Spain|Switzerland | 1 |
| France|Germany|Netherlands | 1 |
| France|Netherlands|United Kingdom | 1 |
| Germany|Australia|Austria|Belgium|Brazil|Bulgaria|Canada|Denmark|France|Hungary|Italy|Netherlands|Poland|Portugal|Singapore|Spain|Switzerland|United Kingdom | 1 |
| Germany|Belgium | 1 |
| Germany|Italy|Jordan | 1 |
| Germany|Jordan|Spain | 1 |
| Germany|Latvia | 1 |
| Germany|Moldova, Republic of|Netherlands | 1 |
| Germany|Switzerland | 1 |
| Germany|United Kingdom | 1 |
| Greece|Hungary|Ireland|Poland|Portugal|Russian Federation|Slovakia|Switzerland| | 1 |
| Hong Kong|Taiwan | 1 |
| Ireland|Austria|Belgium|Canada|China|Czech Republic|France|Germany|Greece|India|Israel|Italy|Malaysia|Netherlands|New Zealand|Portugal|Singapore|South Africa|Spain|Sweden|Switzerland|Thailand|United Kingdom | 1 |
| Ireland|United Kingdom | 1 |
| Italy|Netherlands | 1 |
| Italy|Spain | 1 |
| Italy|United Kingdom | 1 |
| Japan|Philippines | 1 |
| Kazakhstan | 1 |
| Latvia | 1 |
| Lithuania | 1 |
| Malaysia | 1 |
| Netherlands|Russian Federation | 1 |
| Netherlands|Spain | 1 |
| Netherlands|Switzerland | 1 |
| Netherlands|United States|Argentina|Australia|Bulgaria|Canada|Czechia|Denmark|France|Germany|Hungary|Italy|Korea, Republic of|Poland|Russian Federation|Spain|Sweden|Taiwan|United Kingdom | 1 |
| Netherlands|United States|Australia|Czechia|Germany|Hungary|Italy | 1 |
| New Zealand|United States|Latvia|United Kingdom | 1 |
| Oman | 1 |
| Palestinian Territory, occupied | 1 |
| Poland|Argentina|Australia|Austria|Belgium|Brazil|Canada|China|Denmark|France|Germany|India|Israel|Italy|Japan|Malaysia|Netherlands|New Zealand|Singapore|South Africa|Spain|Sweden|Switzerland|Taiwan|United Kingdom | 1 |
| Poland|United Kingdom | 1 |
| Poland|United States|Australia|Canada|China|Czech Republic|Denmark|France|Hungary|Mexico|Netherlands|Spain|United Kingdom | 1 |
| Puerto Rico | 1 |
| Slovakia | 1 |
| South Africa | 1 |
| Spain|United States|Argentina|Australia|Bulgaria|Canada|Denmark|Estonia|France|Germany|Hungary|India|Netherlands|New Zealand|Pakistan|Romania | 1 |
| Spain|United States|Australia|Austria|Belgium|Canada|France|Germany|Ireland|Italy|Netherlands|South Africa|Switzerland|United Kingdom| | 1 |
| Sri Lanka | 1 |
| Trinidad and Tobago | 1 |
| Ukraine | 1 |
| United States|Argentina | 1 |
| United States|Argentina|Australia|Austria|Belgium|Brazil|Canada|China|Egypt|France|Germany|Hungary|India|Israel|Italy|Japan|Lithuania|Malaysia|Mexico|Netherlands|New Zealand|North Macedonia|Peru|Poland|Portugal|Romania|Russian Federation|Saudi Arabia|Serbia|Singapore|South Africa|Spain|Sweden|Switzerland|Taiwan|Thailand|United Kingdom | 1 |
| United States|Argentina|Australia|Belgium|Brazil|Canada|Chile|Czech Republic|France|India|Korea, Republic of|Mexico|Netherlands|Poland|Portugal|Russian Federation|Spain|Turkey | 1 |
| United States|Argentina|Australia|Belgium|Brazil|Canada|France|Hungary|Italy|Mexico|Netherlands|Poland|Russian Federation|Spain | 1 |
| United States|Argentina|Australia|Belgium|Canada|France|Germany|Hungary|Italy|Poland|Spain | 1 |
| United States|Argentina|Brazil|Canada|Finland | 1 |
| United States|Argentina|Peru|Puerto Rico | 1 |
| United States|Australia|Austria|Belgium|Canada|Denmark|Finland|France|Italy|Japan|Latvia|Netherlands|New Zealand|Poland|Singapore|Spain | 1 |
| United States|Australia|Austria|Belgium|Denmark|Finland|France|Germany|Japan|Latvia|Malaysia|Netherlands|New Zealand|Poland|Portugal|Singapore|United Kingdom | 1 |
| United States|Australia|Belgium|Canada|Czechia|Denmark|France|Hungary|Korea, Republic of|Lithuania|Netherlands|New Zealand|Norway|Serbia|Sweden|United Kingdom | 1 |
| United States|Australia|Belgium|Canada|Denmark|Germany|Hungary|Israel|Korea, Republic of|Netherlands|New Zealand|Spain|Switzerland | 1 |
| United States|Australia|Belgium|Canada|France|Italy|Netherlands|Poland|Spain | 1 |
| United States|Australia|Belgium|Canada|France|Italy|Netherlands|Spain | 1 |
| United States|Australia|Belgium|Denmark|France|Germany|Italy|Netherlands|New Zealand|Portugal|Spain|United Kingdom | 1 |
| United States|Australia|Belgium|Egypt|Finland|Germany|Italy|Japan|Korea, Republic of|Latvia|Netherlands|Portugal|Saudi Arabia|South Africa|Spain|Turkey|United Kingdom | 1 |
| United States|Australia|Belgium|France|Japan|Latvia|New Zealand | 1 |
| United States|Australia|Belgium|France|Japan|New Zealand | 1 |
| United States|Australia|Canada|China|New Zealand|Singapore|Taiwan | 1 |
| United States|Australia|Canada|Germany | 1 |
| United States|Australia|Canada|Singapore | 1 |
| United States|Australia|China|Italy|Japan|Korea, Republic of|New Zealand|Singapore|Taiwan | 1 |
| United States|Australia|Germany|New Zealand | 1 |
| United States|Australia|Malaysia|New Zealand | 1 |
| United States|Australia|New Zealand|Singapore | 1 |
| United States|Austria|Belgium|Canada|Germany|Switzerland | 1 |
| United States|Austria|Canada|China|Croatia|Germany|Italy|Japan|Korea, Republic of|Netherlands|Portugal|Serbia|Singapore | 1 |
| United States|Austria|Canada|Germany|Spain|United Kingdom | 1 |
| United States|Belarus|Bulgaria|Canada|Czech Republic|Georgia|Germany|Israel|Poland|Russian Federation|Serbia|Slovakia|Slovenia|Ukraine | 1 |
| United States|Belgium|Canada|Czechia|Denmark|France|Germany|Hungary|Italy|Netherlands|Serbia|Sweden|United Kingdom | 1 |
| United States|Belgium|Canada|Japan|Netherlands|Spain|Switzerland|United Kingdom | 1 |
| United States|Belgium|Canada|Netherlands|Poland|Spain | 1 |
| United States|Belgium|Denmark|Israel|Netherlands|South Africa|United Kingdom | 1 |
| United States|Belgium|France|Germany|Latvia|Netherlands|Spain | 1 |
| United States|Belgium|Germany|Italy|Japan|Netherlands|Spain|United Kingdom | 1 |
| United States|Belgium|Israel|Spain | 1 |
| United States|Brazil | 1 |
| United States|Brazil|Canada|Denmark|Germany|Japan|Netherlands|Singapore | 1 |
| United States|Brazil|Germany|Japan|Latvia|Sweden|Switzerland | 1 |
| United States|Brazil|India|Italy|Korea, Republic of|Poland | 1 |
| United States|Canada|China|Germany|India|Japan|Taiwan | 1 |
| United States|Canada|Czech Republic|Germany|Hungary|New Zealand|Norway|Slovakia|South Africa | 1 |
| United States|Canada|Czech Republic|Germany|South Africa|United Kingdom | 1 |
| United States|Canada|Denmark|Netherlands|Singapore|Sweden|United Kingdom | 1 |
| United States|Canada|Denmark|United Kingdom | 1 |
| United States|Canada|Finland|France|Germany|Netherlands | 1 |
| United States|Canada|Finland|Puerto Rico | 1 |
| United States|Canada|Germany|United Kingdom | 1 |
| United States|Canada|India | 1 |
| United States|Canada|Korea, Republic of|Mexico | 1 |
| United States|Colombia | 1 |
| United States|Colombia|Germany|Latvia|Netherlands | 1 |
| United States|Czechia|Netherlands|United Kingdom | 1 |
| United States|Denmark|Germany|Israel|Netherlands | 1 |
| United States|France|Germany|Israel | 1 |
| United States|France|Germany|Korea, Republic of|New Zealand|Switzerland|United Kingdom | 1 |
| United States|France|Germany|Netherlands | 1 |
| United States|France|Germany|United Kingdom | 1 |
| United States|Germany | 1 |
| United States|Germany|Ireland | 1 |
| United States|India | 1 |
| United States|Israel|Austria|Belgium|Canada|Czech Republic|France|Germany|Italy|Netherlands|Poland|Russian Federation|Spain|Sweden|United Kingdom | 1 |
| United States|Netherlands | 1 |
| United States|New Zealand|Singapore|Taiwan | 1 |
| United States|Puerto Rico | 1 |
| United States|Ukraine | 1 |
| Venezuela | 1 |
| Venezuela|United States|Argentina|Brazil|Chile|Colombia|Lithuania|Netherlands|Peru | 1 |
| Site_count | Study_Count |
|---|---|
| 1 | 1312 |
| 2 | 110 |
| 3 | 49 |
| 4 | 35 |
| 5 | 35 |
| 6 | 26 |
| 7 | 14 |
| 8 | 14 |
| 9 | 16 |
| 10 | 17 |
| 11 | 9 |
| 12 | 18 |
| 13 | 13 |
| 14 | 8 |
| 15 | 13 |
| 16 | 9 |
| 17 | 12 |
| 18 | 6 |
| 19 | 4 |
| 20 | 6 |
| 21 | 1 |
| 23 | 5 |
| 24 | 3 |
| 25 | 8 |
| 26 | 3 |
| 27 | 6 |
| 28 | 7 |
| 29 | 3 |
| 30 | 3 |
| 32 | 2 |
| 33 | 3 |
| 34 | 4 |
| 35 | 2 |
| 36 | 2 |
| 37 | 2 |
| 38 | 2 |
| 39 | 3 |
| 41 | 3 |
| 44 | 1 |
| 45 | 1 |
| 46 | 3 |
| 48 | 2 |
| 49 | 1 |
| 50 | 3 |
| 51 | 3 |
| 52 | 3 |
| 53 | 1 |
| 54 | 1 |
| 56 | 1 |
| 58 | 2 |
| 59 | 1 |
| 60 | 1 |
| 61 | 1 |
| 62 | 3 |
| 64 | 1 |
| 65 | 2 |
| 69 | 1 |
| 73 | 1 |
| 74 | 1 |
| 81 | 1 |
| 82 | 1 |
| 86 | 2 |
| 89 | 1 |
| 90 | 1 |
| 92 | 2 |
| 93 | 1 |
| 95 | 1 |
| 102 | 1 |
| 110 | 1 |
| 112 | 1 |
| 119 | 1 |
| 120 | 1 |
| 121 | 1 |
| 122 | 1 |
| 124 | 1 |
| 126 | 1 |
| 128 | 1 |
| 130 | 1 |
| 133 | 1 |
| 135 | 1 |
| 138 | 1 |
| 144 | 1 |
| 147 | 1 |
| 150 | 1 |
| 154 | 1 |
| 177 | 1 |
| 188 | 1 |
| 195 | 2 |
| 218 | 1 |
| 241 | 1 |
| 256 | 1 |
| 314 | 1 |
| 320 | 1 |
| 471 | 1 |
| 578 | 1 |
| 1091 | 1 |
| Phase | Study_Count |
|---|---|
| N/A | 891 |
| Phase 4 | 417 |
| Phase 3 | 227 |
| Phase 2 | 173 |
| Phase 1 | 67 |
| Phase 2/Phase 3 | 47 |
| Phase 1/Phase 2 | 30 |
| Early Phase 1 | 10 |
| Number_of_Arms | Count_of_Studies |
|---|---|
| 1 | 331 |
| 2 | 1067 |
| 3 | 170 |
| 4 | 67 |
| 5 | 6 |
| 6 | 15 |
| 8 | 2 |
| 11 | 1 |
| NA | 203 |
| Count of Versions | Count of Studies |
|---|---|
| 1 | 162 |
| 2 | 289 |
| 3 | 272 |
| 4 | 237 |
| 5 | 182 |
| 6 | 162 |
| 7 | 128 |
| 8 | 82 |
| 9 | 70 |
| 10 | 47 |
| 11 | 25 |
| 12 | 36 |
| 13 | 22 |
| 14 | 25 |
| 15 | 13 |
| 16 | 19 |
| 17 | 11 |
| 18 | 9 |
| 19 | 6 |
| 20 | 5 |
| 21 | 7 |
| 22 | 6 |
| 23 | 4 |
| 24 | 2 |
| 25 | 1 |
| 26 | 4 |
| 27 | 1 |
| 28 | 2 |
| 29 | 4 |
| 30 | 1 |
| 32 | 4 |
| 34 | 1 |
| 35 | 1 |
| 36 | 2 |
| 37 | 1 |
| 38 | 1 |
| 40 | 1 |
| 44 | 1 |
| 45 | 1 |
| 54 | 1 |
| 56 | 1 |
| 57 | 2 |
| 60 | 2 |
| 67 | 1 |
| 71 | 1 |
| 73 | 1 |
| 77 | 1 |
| 79 | 1 |
| 80 | 1 |
| 88 | 1 |
| 97 | 1 |
| 98 | 1 |
| Change Type | Count_of_Changes | Count_of_Studies | ratio |
|---|---|---|---|
| Study Status | 9810 | 1700 | 5.770588 |
| Contacts/Locations | 4105 | 1409 | 2.913414 |
| Recruitment Status | 2546 | 1440 | 1.768056 |
| Study Design | 1867 | 1248 | 1.495994 |
| None (earliest Version on record) | 1862 | 1862 | 1.000000 |
| Outcome Measures | 1569 | 915 | 1.714754 |
| Arms | 1158 | 765 | 1.513726 |
| Interventions | 1158 | 765 | 1.513726 |
| Sponsor/Collaborators | 1147 | 764 | 1.501309 |
| Study Description | 986 | 627 | 1.572568 |
| Eligibility | 944 | 632 | 1.493671 |
| Study Identification | 940 | 633 | 1.484992 |
| Oversight | 637 | 540 | 1.179630 |
| More Information | 448 | 175 | 2.560000 |
| References | 419 | 291 | 1.439863 |
| Conditions | 357 | 297 | 1.202020 |
| Results | 295 | 295 | 1.000000 |
| IPDSharing | 195 | 180 | 1.083333 |
| Baseline Characteristics | 109 | 87 | 1.252874 |
| Results Submission Events | 94 | 94 | 1.000000 |
| Reported Adverse Events | 74 | 65 | 1.138462 |
| Participant Flow | 62 | 53 | 1.169811 |
| Documents | 58 | 49 | 1.183674 |
| 2020 Documents | 1 | 1 | 1.000000 |
| 2020 Study Status | 1 | 1 | 1.000000 |
| Quality Control Review has not concludedReturned: April 13 | 1 | 1 | 1.000000 |
| Quality Control Review has not concludedReturned: March 27 | 1 | 1 | 1.000000 |
| Measure | Early.Phase.1 | N.A | Phase.1 | Phase.1.Phase.2 | Phase.2 | Phase.2.Phase.3 | Phase.3 | Phase.4 |
|---|---|---|---|---|---|---|---|---|
| Min. | 20.00 | 1.0000 | 5.0000 | 10.0000 | 2.0000 | 18.0000 | 20.000 | 11.0000 |
| 1st Qu. | 24.00 | 60.0000 | 15.5000 | 29.2500 | 35.0000 | 59.5000 | 100.000 | 62.0000 |
| Median | 39.00 | 137.0000 | 32.0000 | 56.5000 | 79.0000 | 120.0000 | 281.000 | 179.0000 |
| Mean | 45.20 | 573.4045 | 177.0299 | 115.5667 | 193.0643 | 292.9149 | 1244.472 | 870.4747 |
| 3rd Qu. | 49.75 | 417.0000 | 64.0000 | 134.7500 | 150.0000 | 319.0000 | 769.250 | 634.5000 |
| Max. | 92.00 | 61301.0000 | 8400.0000 | 643.0000 | 10000.0000 | 3043.0000 | 25673.000 | 25682.0000 |
| group_type | Group_Count |
|---|---|
| Experimental | 1541 |
| Active Comparator | 1091 |
| Placebo Comparator | 292 |
| Other | 225 |
| No Intervention | 220 |
| NA | 203 |
| Sham Comparator | 21 |
| intervention_model | Study_Count |
|---|---|
| Parallel Assignment | 1217 |
| Single Group Assignment | 450 |
| Crossover Assignment | 109 |
| Factorial Assignment | 45 |
| NA | 24 |
| Sequential Assignment | 17 |
| primary_purpose | Study_Count |
|---|---|
| Treatment | 1151 |
| Diagnostic | 235 |
| Prevention | 210 |
| Basic Science | 71 |
| Supportive Care | 51 |
| Health Services Research | 47 |
| Other | 42 |
| NA | 38 |
| Screening | 15 |
| Device Feasibility | 1 |
| Educational/Counseling/Training | 1 |
| Country | Study_Count |
|---|---|
| United States | 184 |
| NA | 124 |
| Korea, Republic of | 53 |
| Germany | 41 |
| China | 39 |
| Canada | 29 |
| United Kingdom | 28 |
| France | 18 |
| Italy | 18 |
| Netherlands | 17 |
| Denmark | 15 |
| Switzerland | 14 |
| Japan | 12 |
| Brazil | 11 |
| Norway | 11 |
| Israel | 10 |
| Sweden | 9 |
| Finland | 8 |
| Poland | 8 |
| Austria | 7 |
| Greece | 7 |
| Singapore | 7 |
| Belgium | 6 |
| India | 6 |
| Russian Federation | 6 |
| Turkey | 6 |
| Egypt | 4 |
| Spain | 4 |
| United States|Canada | 4 |
| Croatia | 3 |
| Taiwan | 3 |
| Hong Kong | 2 |
| Iran, Islamic Republic of | 2 |
| Romania | 2 |
| United States|Denmark | 2 |
| Argentina|Belgium|Brazil|Denmark|Finland|France|Germany|Greece|Italy|Luxembourg|Mexico|Netherlands|Norway|Poland|Romania|Slovenia|Spain|Turkey|United Kingdom|Venezuela | 1 |
| Argentina|Norway | 1 |
| Australia | 1 |
| Austria|Bangladesh|Belarus|Brazil|Bulgaria|Chile|Czechia|Denmark|Egypt|Estonia|France|Georgia|Germany|Hungary|Indonesia|Ireland|Israel|Latvia|Lithuania|Malta|Mexico|Netherlands|Poland|Romania|Russian Federation|Serbia|Slovenia|Spain|Sweden|Taiwan|Ukraine|United Kingdom | 1 |
| Austria|Belgium|Bulgaria|Germany|Italy|Netherlands|Poland|Switzerland|United Kingdom | 1 |
| Austria|Belgium|Denmark|France|Germany|Hungary|Ireland|Italy|Netherlands|Spain|United Kingdom | 1 |
| Austria|Czechia|Denmark|France|Germany|Ireland|Jordan|Latvia|Lithuania|Morocco|Poland|Portugal|Russian Federation|Spain|Switzerland|United Kingdom | 1 |
| Austria|Germany | 1 |
| Bangladesh | 1 |
| Belgium|Bulgaria|Croatia|Czechia|Denmark|Finland|Germany|Greece|Hungary|Netherlands|Poland|Slovakia|Spain|Sweden|Switzerland|United Kingdom | 1 |
| Belgium|France | 1 |
| Belgium|France|Germany|Hungary|Ireland|Italy|Latvia|Poland|Spain|United Kingdom | 1 |
| Belgium|France|Germany|Italy|Switzerland | 1 |
| Belgium|Germany|Ireland|Italy|Switzerland | 1 |
| Belgium|Singapore | 1 |
| Belgium|Sweden|United Kingdom | 1 |
| Brazil|Germany|Italy|United Kingdom | 1 |
| Bulgaria | 1 |
| China|India|Korea, Republic of|Singapore | 1 |
| China|India|Malaysia|Sri Lanka|Vietnam | 1 |
| China|Korea, Republic of|Malaysia|Taiwan|Thailand | 1 |
| Denmark|France|Germany|Italy|Japan|Netherlands|United Kingdom | 1 |
| Denmark|Netherlands|New Zealand|Poland | 1 |
| Ecuador | 1 |
| Germany|Hungary | 1 |
| Germany|Italy|Portugal|Spain | 1 |
| Germany|Malaysia|Spain | 1 |
| Germany|Poland | 1 |
| Hungary | 1 |
| Pakistan | 1 |
| Paraguay | 1 |
| Portugal | 1 |
| Portugal|Spain | 1 |
| Qatar | 1 |
| Slovenia | 1 |
| Spain|Sweden | 1 |
| Spain|Switzerland|United Kingdom | 1 |
| Spain|United Kingdom | 1 |
| Trinidad and Tobago | 1 |
| United States|Austria|Belgium|Denmark|France|Germany|Italy|United Kingdom | 1 |
| United States|Austria|Canada|Egypt|Estonia|Germany|Greece|India|Italy|Japan|Netherlands|Portugal|Saudi Arabia|Spain|United Kingdom | 1 |
| United States|Austria|Canada|Germany|Italy|Korea, Republic of|Switzerland | 1 |
| United States|Belgium|Czech Republic|Netherlands|Sweden | 1 |
| United States|Belgium|Denmark|France|Germany|Italy|Netherlands|Poland|Spain|Sweden|Switzerland|United Kingdom | 1 |
| United States|Belgium|Denmark|Israel | 1 |
| United States|Belgium|France|Italy|Korea, Republic of|Netherlands|Portugal|Sweden|United Kingdom | 1 |
| United States|Belgium|France|Slovakia | 1 |
| United States|Bulgaria | 1 |
| United States|Canada|China|Italy|Japan|Korea, Republic of|Latvia|Netherlands | 1 |
| United States|Canada|Puerto Rico | 1 |
| United States|Canada|Switzerland | 1 |
| United States|Denmark|France|Italy|Latvia|Netherlands|Poland|United Kingdom | 1 |
| United States|France|Germany|Italy|Japan|Netherlands | 1 |
| United States|Germany|Japan|Netherlands|Spain|United Kingdom | 1 |
| United States|Italy|Latvia|Netherlands|Slovakia|United Kingdom | 1 |
| United States|Netherlands|United Kingdom | 1 |
| United States|Saudi Arabia | 1 |
| Site_count | Study_Count |
|---|---|
| 1 | 597 |
| 2 | 37 |
| 3 | 15 |
| 4 | 13 |
| 5 | 11 |
| 6 | 10 |
| 7 | 3 |
| 8 | 7 |
| 9 | 6 |
| 10 | 8 |
| 11 | 4 |
| 12 | 3 |
| 13 | 3 |
| 14 | 1 |
| 15 | 2 |
| 16 | 2 |
| 17 | 1 |
| 18 | 3 |
| 19 | 3 |
| 20 | 4 |
| 21 | 1 |
| 22 | 1 |
| 23 | 4 |
| 24 | 3 |
| 25 | 1 |
| 26 | 1 |
| 28 | 2 |
| 29 | 3 |
| 33 | 2 |
| 34 | 1 |
| 35 | 1 |
| 37 | 1 |
| 38 | 1 |
| 40 | 3 |
| 41 | 1 |
| 42 | 2 |
| 43 | 1 |
| 44 | 1 |
| 47 | 1 |
| 50 | 2 |
| 58 | 1 |
| 68 | 1 |
| 69 | 1 |
| 71 | 1 |
| 81 | 1 |
| 82 | 1 |
| 90 | 1 |
| 107 | 1 |
| 183 | 1 |
| 257 | 1 |
| 411 | 1 |
| Count of Versions | Count of Studies |
|---|---|
| 1 | 122 |
| 2 | 133 |
| 3 | 159 |
| 4 | 95 |
| 5 | 71 |
| 6 | 46 |
| 7 | 29 |
| 8 | 21 |
| 9 | 28 |
| 10 | 10 |
| 11 | 9 |
| 12 | 9 |
| 13 | 8 |
| 14 | 5 |
| 15 | 5 |
| 16 | 4 |
| 17 | 2 |
| 18 | 3 |
| 19 | 3 |
| 21 | 1 |
| 22 | 2 |
| 23 | 1 |
| 24 | 2 |
| 26 | 1 |
| 28 | 1 |
| 29 | 1 |
| 31 | 1 |
| 32 | 1 |
| 36 | 1 |
| 63 | 1 |
| 106 | 1 |
| 124 | 1 |
| Change Type | Count_of_Changes | Count_of_Studies | ratio |
|---|---|---|---|
| Study Status | 3082 | 655 | 4.705343 |
| Contacts/Locations | 1033 | 481 | 2.147609 |
| Recruitment Status | 778 | 513 | 1.516569 |
| None (earliest Version on record) | 777 | 777 | 1.000000 |
| Study Design | 680 | 464 | 1.465517 |
| Sponsor/Collaborators | 386 | 288 | 1.340278 |
| Study Description | 345 | 220 | 1.568182 |
| Eligibility | 323 | 247 | 1.307692 |
| Outcome Measures | 319 | 241 | 1.323651 |
| Study Identification | 311 | 220 | 1.413636 |
| Groups | 184 | 138 | 1.333333 |
| Interventions | 184 | 138 | 1.333333 |
| Oversight | 163 | 151 | 1.079470 |
| References | 139 | 87 | 1.597701 |
| Conditions | 111 | 86 | 1.290698 |
| IPDSharing | 62 | 58 | 1.068966 |
| More Information | 41 | 20 | 2.050000 |
| Results | 36 | 36 | 1.000000 |
| Results Submission Events | 16 | 16 | 1.000000 |
| Baseline Characteristics | 14 | 11 | 1.272727 |
| Reported Adverse Events | 13 | 9 | 1.444444 |
| Documents | 9 | 9 | 1.000000 |
| Participant Flow | 9 | 7 | 1.285714 |
| Measure | Observational |
|---|---|
| Min | 1.000 |
| 1st Qu | 96.000 |
| Median | 300.000 |
| Mean | 6401.925 |
| 3rd Qu | 1111.500 |
| Max | 1758584.000 |
| observational_model | Study_Count |
|---|---|
| Cohort | 445 |
| Case-Only | 93 |
| NA | 86 |
| Case-Control | 44 |
| Case Control | 43 |
| Other | 43 |
| Case-Crossover | 7 |
| Defined Population | 4 |
| Defined Population, Natural History | 4 |
| Ecologic or Community | 4 |
| Family-Based | 2 |
| Case Control, Natural History | 1 |
| Natural History | 1 |
| time_perspective | Study_Count |
|---|---|
| Prospective | 534 |
| Retrospective | 99 |
| Cross-Sectional | 68 |
| NA | 53 |
| Other | 12 |
| Longitudinal, Prospective | 6 |
| Cross-Sectional, Prospective | 2 |
| Cross-Sectional, Retrospective | 1 |
| Longitudinal, Retrospective | 1 |
| Longitudinal, Retrospective/Prospective | 1 |
| Country | Study_Count |
|---|---|
| China | 18 |
| Korea, Republic of | 17 |
| United States | 15 |
| Italy | 13 |
| Spain | 9 |
| Germany | 8 |
| Netherlands | 7 |
| Belgium | 5 |
| Japan | 5 |
| NA | 5 |
| Greece | 4 |
| Brazil | 3 |
| Russian Federation | 3 |
| France | 2 |
| Singapore | 2 |
| Switzerland | 2 |
| United Kingdom | 2 |
| Argentina|Armenia|Austria|Bangladesh|Belarus|Belgium|Brazil|Bulgaria|Chile|Colombia|Czechia|Egypt|Estonia|France|Georgia|Hungary|Iceland|India|Indonesia|Ireland|Israel|Japan|Jordan|Kazakhstan|Kuwait|Lebanon|Lithuania|Malaysia|Mexico|Morocco|Netherlands|North Macedonia|Oman|Poland|Portugal|Romania|Saudi Arabia|Serbia|Slovakia|South Africa|Spain|Sweden|Switzerland|Thailand|Tunisia|Ukraine|United Arab Emirates|United Kingdom|Uzbekistan|Vietnam | 1 |
| Australia|Germany|United Kingdom | 1 |
| Belgium|Canada|Germany|Japan|Singapore | 1 |
| Belgium|Hong Kong | 1 |
| Belgium|Netherlands | 1 |
| Canada | 1 |
| Denmark|Norway | 1 |
| Egypt | 1 |
| Finland | 1 |
| France|Germany|Italy|Spain | 1 |
| France|Germany|Switzerland | 1 |
| Germany|Austria|Ireland|Italy|Spain|Switzerland|Turkey|United Kingdom | 1 |
| Germany|Malaysia|Spain | 1 |
| India | 1 |
| Indonesia | 1 |
| Israel | 1 |
| Mexico | 1 |
| Netherlands|Poland|Spain|United Kingdom | 1 |
| Netherlands|Russian Federation | 1 |
| Norway | 1 |
| Poland | 1 |
| Portugal | 1 |
| Portugal|Spain | 1 |
| Sweden | 1 |
| Thailand | 1 |
| Tunisia | 1 |
| Turkey | 1 |
| United States|Argentina|Canada|India|Italy | 1 |
| United States|Canada|Egypt|Greece|Lebanon|Russian Federation | 1 |
| United States|Canada|Germany|Israel | 1 |
| United States|India|Singapore | 1 |
| United States|Israel | 1 |
| Site_count | Study_Count |
|---|---|
| 1 | 92 |
| 2 | 6 |
| 3 | 5 |
| 4 | 8 |
| 5 | 2 |
| 6 | 3 |
| 7 | 5 |
| 8 | 1 |
| 9 | 2 |
| 11 | 2 |
| 13 | 1 |
| 14 | 2 |
| 15 | 1 |
| 16 | 3 |
| 17 | 1 |
| 18 | 1 |
| 19 | 1 |
| 20 | 1 |
| 21 | 1 |
| 22 | 1 |
| 24 | 1 |
| 26 | 2 |
| 31 | 1 |
| 36 | 2 |
| 37 | 2 |
| 44 | 1 |
| 48 | 1 |
| 52 | 1 |
| 54 | 1 |
| 462 | 1 |
| Count of Versions | Count of Studies |
|---|---|
| 1 | 22 |
| 2 | 33 |
| 3 | 29 |
| 4 | 17 |
| 5 | 15 |
| 6 | 12 |
| 7 | 5 |
| 8 | 3 |
| 9 | 5 |
| 10 | 1 |
| 11 | 3 |
| 12 | 2 |
| 13 | 1 |
| 15 | 1 |
| 18 | 2 |
| 50 | 1 |
| Change Type | Count_of_Changes | Count_of_Studies | ratio |
|---|---|---|---|
| Study Status | 520 | 130 | 4.000000 |
| Contacts/Locations | 282 | 99 | 2.848485 |
| None (earliest Version on record) | 152 | 152 | 1.000000 |
| Recruitment Status | 143 | 95 | 1.505263 |
| Study Design | 100 | 71 | 1.408451 |
| Study Description | 55 | 40 | 1.375000 |
| Outcome Measures | 50 | 41 | 1.219512 |
| Oversight | 40 | 37 | 1.081081 |
| Study Identification | 35 | 32 | 1.093750 |
| Eligibility | 31 | 26 | 1.192308 |
| Sponsor/Collaborators | 25 | 22 | 1.136364 |
| References | 23 | 12 | 1.916667 |
| Groups | 22 | 20 | 1.100000 |
| Interventions | 22 | 20 | 1.100000 |
| Conditions | 15 | 14 | 1.071429 |
| IPDSharing | 14 | 13 | 1.076923 |
| Results | 4 | 4 | 1.000000 |
| Documents | 3 | 2 | 1.500000 |
| Results Submission Events | 3 | 3 | 1.000000 |
| Baseline Characteristics | 1 | 1 | 1.000000 |
| More Information | 1 | 1 | 1.000000 |
| Measure | Registries |
|---|---|
| Min | 28.00 |
| 1st Qu | 300.00 |
| Median | 1000.00 |
| Mean | 91393.95 |
| 3rd Qu | 2350.00 |
| Max | 7205000.00 |
| observational_model | Study_Count |
|---|---|
| Cohort | 108 |
| Case-Only | 23 |
| Other | 14 |
| Case-Control | 6 |
| Case-Crossover | 1 |
| time_perspective | Study_Count |
|---|---|
| Prospective | 138 |
| Other | 6 |
| Cross-Sectional | 5 |
| NA | 2 |
| Retrospective | 1 |
| target_duration | Study_Count |
|---|---|
| 5 Years | 33 |
| 12 Months | 24 |
| 1 Year | 18 |
| 3 Years | 13 |
| 2 Years | 12 |
| 1 Day | 11 |
| 10 Years | 6 |
| 24 Months | 6 |
| 1 Month | 4 |
| 6 Months | 4 |
| 18 Months | 3 |
| 3 Days | 3 |
| 9 Months | 3 |
| 1 Week | 2 |
| 3 Months | 2 |
| 1095 Days | 1 |
| 12 Weeks | 1 |
| 17 Years | 1 |
| 2 Days | 1 |
| 30 Days | 1 |
| 36 Months | 1 |
| 7 Days | 1 |
| 90 Days | 1 |